* {
	padding: 0;
	margin: 0;
}

.background_video video {
	position: absolute;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

/* -------------logo导航栏设置----------- */
.left_nav .logo {
	z-index: 3;
	position: absolute;
	margin: 30px 30px;
	color: white;
	font-family: 微软雅黑;
	font-size: 28px;
	text-align: center;
	width: 50px;
	height: 50px;
	background: rgb(5, 160, 129);
}

.left_nav span {
	position: absolute;
	z-index: 3;
	margin: 35px 90px;
	color: white;
	font-family: 微软雅黑;
	font-size: 28px;
}

.right_nav ul {
	list-style-type: none;
	position: absolute;
	z-index: 3;
	right: 120px;
	top: 25px;
}

.right_nav ul li {
	display: inline-block;
	align-items: center;
	height: 32px;
	padding-left: 30px;
	line-height: 32px;
	border-radius: 4 px;
	margin-right: 30px;
}

.right_nav ul li a {
	color: white;
	line-height: 32px;
	font-size: 16px;
	text-shadow: 0 1px 2px rgb(0 0 0 / 40%);
	vertical-align: middle;
}

/* -------------- 主体内容设置------------- */
.main {
	position: absolute;
	z-index: 3;
	top: 40%;
	right: 10%;
}

.main .life {
	width: 500 px;
	height: 112 px;
	color: #fff;
	text-align: right;
	font-size: 32px;
	font-style: italic;
}

.main .login_button{
	float: right;
	margin-top: 25px;
	text-align: center;
}

.main .login_button a{
	width: 170px;
	height: 50px;
	font-size: 18px;
	text-align: center;
	padding: 5px;
}

/* -----------------------------页尾部分-------------- */
.footer{
	position: absolute;
	z-index: 3;
	text-align: center;
	top: 90%;
	left: 0;
	right: 0;
	bottom: 0;
	margin: auto;
}

.footer p{
	font-size: 12px;
	color: white;
	opacity: 0.8;
}